Astragalus lentiginosus var. latus |
Astragalus lentiginosus var. trumbullensis |
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freckled milkvetch, schell creek milkvetch |
freckled milkvetch, Mount Trumbull milkvetch |
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Habit | Plants perennial, 5–17 cm. | Plants perennial, 30–45(–65) cm, herbage green or subglabrescent. |
Stems | usually ascending, rarely prostrate. |
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Leaves | (4–)6–13 cm; leaflets 11–17(–23), blades broadly obovate, ovate, or broadly oblanceolate, (4–)6–15 mm, apex shallowly notched or obtuse. |
2–9.5(–10.5) cm; leaflets (7–)13–17, blades broadly obovate to oblanceolate or elliptic, 5–15 mm, apex retuse to round or subacute, adaxial surface usually strigose to strigulose, sometimes glabrate or glabrous. |
Racemes | shortly and loosely 5–12(–18)-flowered, short and compact in fruit; axis 0.7–2(–4) cm in fruit. |
loosely 4–15(–17)-flowered; axis elongating, 3–9.5 cm in fruit. |
Peduncles | 1.5–6 cm. |
4.5–7.5 cm. |
Flowers | (11.3–)15–19 mm; calyx (6.5–)7–12.5 mm, tube (4.5–)5.6–8.2 mm, lobes (1.4–)2–4 mm; corolla pink-purple. |
13–17 mm; calyx 6.3–7.4 mm, tube 4.8–5.5 mm, lobes 1.7–2 mm; corolla pink- or red-purple, sometimes with pale or white wing tips. |
Legumes | green, red-mottled, becoming stramineous, plumply ovoid or subglobose, strongly inflated, 1–2.5 × 0.7–1.6 cm, leathery, glabrous; beak 2.5–5 mm, bilocular. |
evidently persistent, stramineous or mottled, linear-oblong to oblong or narrowly ellipsoid, not or scarcely inflated, 17–32 × 4–5.5(–7.5) mm, ± bilocular, somewhat fleshy becoming leathery or stiffly papery, strigulose; beak 3–5 mm, unilocular; stipe 0.1–1 mm. |
Seeds | (12–)22–28. |
14–28. |
Astragalus lentiginosus var. latus |
Astragalus lentiginosus var. trumbullensis |
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Phenology | Flowering May–Jul. | Flowering Apr (Sep). |
Habitat | Open, gravelly slopes in timber belt. | Sandstone outcrops and gravel, with Agave, Ephedra, Mortonia, Purshia, and other warm-desert shrubs. |
Elevation | (1700–)2200–3000 m. ((5600–)7200–9800 ft.) | 900–1800 m. (3000–5900 ft.) |
Distribution |
NV |
AZ |
Discussion | Variety latus is known from the Schell Creek and Egan ranges in White Pine County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety trumbullensis is restricted to Mohave County. It is closely related to vars. mokiacensis and palans, weakly differentiated by a series of features that intergrade insensibly but taken in combination are more or less diagnostic (as is true for most members of the lentiginosus complex). J. A. Alexander (2005) provided statistical evidence that this variety is indistinguishable from var. mokiacensis (as Astragalus mokiacensis), and he considered the two synonymous. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. diphysus var. latus | |
Name authority | (M. E. Jones) M. E. Jones: Rev. N.-Amer. Astragalus, 125. (1923) | S. L. Welsh & N. D. Atwood: Rhodora 103: 81, fig. 3. (2001) |
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